Special Section on Nanostructured Thin Films

Finite-thickness photonic crystals based on nanostructured porous silicon for optical sensing

[+] Author Affiliations
Rau´l J. Marti´n-Palma, Vicente Torres-Costa, Miguel Manso, Jose´ M. Marti´nez-Duart

Departamento de Fi´sica Aplicada, Universidad Auto´noma de Madrid, C-12, Cantoblanco, Madrid 28049 Spain

J. Nanophoton. 3(1), 031504 (January 21, 2009). doi:10.1117/1.3079805
History: Received October 16, 2008; Revised January 12, 2009; Accepted January 12, 2009; January 21, 2009; Online January 21, 2009
Text Size: A A A

Abstract

Porous silicon-based photonic crystals of finite thickness were designed aiming at their subsequent use in the field of optical chemical- and bio-sensing. These structures consist in nanometric porous silicon rods arranged as to form a triangular lattice embedded into a silicon slab. These structures have two-dimensional periodicity and index-guiding is used to confine light in the third dimension. This way, the fabrication of photonic crystals in thin dielectric slab systems is enabled. The photonic band structure for the odd and even modes was calculated as a function of the thickness of the slab, finding a significant dependence on this parameter. The existence of a photonic bandgap for even modes was verified and its size was maximized. A change in the index of refraction of porous silicon caused by infiltration with chemical or biochemical species changes the band structure.

© 2009 Society of Photo-Optical Instrumentation Engineers

Citation

Rau´l J. Marti´n-Palma ; Vicente Torres-Costa ; Miguel Manso and Jose´ M. Marti´nez-Duart
"Finite-thickness photonic crystals based on nanostructured porous silicon for optical sensing", J. Nanophoton. 3(1), 031504 (January 21, 2009). ; http://dx.doi.org/10.1117/1.3079805


Figures

Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.